Fluid mixing device



March 7, 1961 EuTscH FLUID MIXING DEVICE Filed April 5, 1957 FIG.

FIG.

INVENTOR. C AR L J. DE uISCH ATTORNEY United Stacs Patent 2,973,718; FLUID MIXING. DEVICE Carl J. Deutsch, Rock Hill, Mo.: StandardMachine v8: Mfg.- Co., 8213' Gravois Ave, St. Louis 23, M0. assignor to Carl J. Deutsch, Bela D eutsch, and Herman Deutsch, doing business as Standard Machine & Manufacturing Co., St. Louis, Mo.

Filed A r. s,1 9s7, Ser. No. 650,494 'Claims. cl. ins-@262 This invention relates to improvements in a fluid mix; ing device, and more particularly, to an improvedlmechanisnr for selectively combining various liquids withva stream of water or other fluid.

It is anjirnportant object ofthis invention to provide an improved assembly which would permit adetergent or a chlorine fluid to be mixed simultaneously or separately in p redetermined' quantities with a stream'of water."

Another important objectiveyis achieved in thearrangement; of.v a l ve pinsrelative to" the liquid. induction passages formed in the. mixer body, and in the arrangement of theopenings ofsuch .inductionpassages relative to each other and to the p rim ary passage to realizean eflicient .mixing device that 'positively controls the'predetermined quantities of "liquids combined with the water flow.

Other important advantages are realized by the-provision of an air induction passage in the mixer body that communicates with'the primary passage to control the suction pressure 'and hence. control the r ate ofliquid flow thro1 1gh the liquid inductionpassages. The arrangementct the air induction passage andits opening relative totheprimary passage and to theyopenings of the liquid induction passages afiords .an effective control I over the liquidfjflows through such" passages.

Stillanother important object is achieved by the "pro: vision of animproved'restricter means inat. least one of the liquid indnction'passages to control with even greater'precision the rate of liquid flow of at leastone ofthe liquids utili zed; the restrictor means being -pref erably used in the chlorine linen 'Yet' another important object is realized in providing a rnixing un'it of 'the multiple fluid mixing typethatis simple and durable in construction, relatively inexpensive to manufacture etiicient in operation, and which-can;b e readily assembled and used.

'Theforegoing and numerous. other objects and ade vantage of .the invention will' more clearly appear; from the following detailed description of a preferred embodiment, particularly when considered in connection with 'the accompanying drawing, in which: 7 'F igljl is -a front elevational view of a preferred 'embodiment of the invention, showing the fluid mixing device attached to a faucet and connected tosources of other liquids to be selectively introduced into the water flow; i

Fig, 2 is an enlarged vertical' sectional view showing in detailthe structure of'the improved fluid-mixing device, the valve pinsbeing disposed in the closed position;

.Ifig, 3 is a view .in cross-section as seen along line 3 ho ffFiggZ with the valve pins being illustrated in the open position; A

Fig. 4* is a view partly-in cross section as'seenjalong staggered"line 4j4 of Fig. 3, and Q Fig. Sis a plan viewofthe perforated disc utilized in" thQTlQZZlB structure; V

keterringinowbyi Fharacters ofreference, to the draw- Patented Mar. 7, 1961 ing, andj first to Fig, 1, in which it is illustrated that the improved. fluid mixingdevice generally indicated at 10 is attached to a conventional type faucet referred to-at 11 and operatively connected by tubing 12 to a detergent reservoir 13 and'to a chlorine reservoir; 14;

The fluid mixing device includes a body 15 through which a primary passage 16 is formed. The body 15 is formed at the upper portion of primary passage 16 to provide an internally, threaded socketx17. A pairof Washers 20 isdisposed in socket 17, and a cone-shaped washer 21 seats on washers 20. Threadably fixed to mixerbody 15 in socket 17 is a screw threaded'coupling 22 that includes an upwardly tapered wall 23 engaging cone-shaped washer 21, the washers 20 and 21 cooperating. with. coupling 22 to provide an effective seal. The coupling 22 is internally threaded-at its upper portion to facilitate attachment to a' faucet, and a plurality-of set screws 24 are carriedby coupling 22 to anchor securely the coupling to such faucet.

'The primarypassage .16 includes a highly restricted orifice or portion'25' through which the Water from the faucetmust pass at greatly increased velocity, and .inclu des an immediately; adjacent portion 26'that is slightly larger, than restricted portion'j25 and yet relatively restricted in size compared to the j entrance and ex-ib of the primary passage 16. It will be seen that the restriated portions, 25.1and'26 form a venturi tube-Which has an. area of great pressure, reduction immediately" a'djacent the restrictedorifice '25,. e i

The lower portion 'of'mixer" body 15 is-provided'with an external ly threaded extension 27 on which is; mounted a nozzle-30, Seated and'retained by a lower'inturned flange31 of nozzle is a pair ofwashers 32=onwhich is carried awater breakup means consisting of a cireular disc 3 3 having a plurality of circular apertures-34 formed in its peripheral margin through which the Water flows aiter'leaving. the primary passage 16 formed in mixer body 15. The perforated disc structure 33--is perhaps best shown in Fig. 5. Another washer 35 isdispose'd between disc 3 3 and the lower extension-27 of} body 15. Whenjthe nozzle 30 is threadedly attachedto body ex tension'27 and'tightened, the washers 32 and 35 provide an efiective seal.

A pair' of liquid induction passages 36 and 37' areprov ide'd'in mixerbody 15' in communicationwith therestricted portions- 25and' 26 of the primary passage, the liquidinduction'passages 36 and -3'1-having outlet openings 40 located' at the same level justbelow restricted portion 25 and on opposite sides of the primary passage in 180 degree relation. The'outlet of induction passage 3-6 is operatively. conneetedto, a hose connector 41 threadedly attached to one side of'mixer body 15, and the outlet of liquid induction passage 37 is operatively connected to a hose connector42 threadedly attached .to' the 'oppo; site side ofmixervbody 15." The hoses 12,are, to beconnected to connectors 41 and42 and serve to connect the V detergent reservoir 13 with liquid induction passage 1-36 and to connect the chlorine reservoir14 with liquid induction passage, 37.

A restrictor 431s providedinternally of hose: connector 42 inorder to realize a more precisecontrol of" the chlorine flowttothe fluid mixing device.v Thi'srestrictor 43 consistsrofa threaded plug which grips the smooth internal wall of hose connector 42. The chlorine in passingthroughhose connector 42 mustpass around'the restrictorplug 43 in a spiral direction as determinedby the threaded 'grooves, andv then passes into the liquid induction passage 37.

.Formed. transversely through mixer bodyy15 in parallel relation'on opposite sides of the primary passage 16gis a pairof rvalve bores 44 and 45. Valve bore 44 extends through andcommunicates with liquid induction passage 36, and valve bore 45 extends through and communicates with liquid induction passage 37.

-A pair of valve pins 46 and 47 are slidably mounted and carried in valve bores 44 and 45, the pins 46-47 being of a length that exceeds 'the width of mixer body 15. The ends of pins 46-47 are provided with head portions 50 which abut opposite sides of mixer body 15 and determine the range of slidable movement of such pins 46-47. It will be particularly noted that pins 46- 47 are arranged in parallel relation on opposite sides of the primary passage 16.

Valve pin 46 is provided with a reduced portion 51 that provides a peripheral groove 52 that is aligned with liquid induction passage 36 when pin 46 is disposed in one limit of its range of movement as indicated in Fig. 3. Similarly valve pin 47 is provided with a reduced portion 53 that provides a peripheral groove 54 that is aligned with liquid induction passage 37 when the pin 47' is slidably moved to one limit of its range of movement as indicated in Fig. 3. When the valve pins 46-47 are disposed in the positions above indicated, primary passage 16 is placed in communication with the liquid reservoirs 13 and 14 through the respective liquid induction passages and hose connections. When valve pins 46-47 are moved to the other limit, the peripheral grooves 52 and 54 are moved out of alignment with the liquid induction passages 36 and 37, and hence the pins close such passages as indicated in Fig. 2.

Each valve pin 46-47 is provided with a friction ring 55 that frictionally engages the wall of mixer body 15 forming each valve bores 44-45, and serves to stay the valve pin in any adjusted position within its range of movement.

An air induction passage 56 is formed in mixer body 15, the passage 56 having an inlet communicating with the atmosphere and having an outlet opening 57 communicating with the restricted portions 25 and 26. The outlet opening 57 is particularly located at the same level as outlet openings 40 of liquid induction passages 36 and 37 and spaced equidistantly in 90 degree relation to such passage openings 40.

Formed in mixer body 15 so as to communicate with air induction passage 56 is an internally threaded socket 60. A threaded valve pin 61 is adjustably mounted and secured in socket 60, and includes a tapered end portion 62 adapted to interfit a valve seat provided in the through port 57 so as to open and close such port. Located in socket 60 and engaging valve pin 61 is a compression spring 63 that tends to urge the valve pin outwardly to exert a frictional pressure upon the threads of valve pin and socket which serve to prevent unintentional or unwanted rotation of the valve pin 61.

It will be readily seen that when the valve pin 61 is moved inwardly so that it completely closes the through port 57, the suction pressure in restricted portions 25- 26 created by the venturi action will operate to induce liquid flow through either or both of the liquid induction passages 36-37, when the valve pins 46-47 are slidably adjusted to open these passages. However, when the valve pin 61 is adjusted so that a quantity of air enters through port 57 then the suction pressure is reduced in restricted portions 25 and 26 to an extent to reduce pro portionately the rate of liquid flow through induction passages 36-37. Thus it is seen that valve pin 61 provides a ready adjustment for the amount of liquid which is allowed to flow into the mixer. The particular arrangement and location of the air induction passage opening '57 relative to the liquid induction passage openings 40 result in obtaining more effective control over the liquid flow through such liquid induction passages 36-37, by adjustment of valve pin 61.

' It is thought that the function and operation of the fluid mixing device has become fully apparent from the foregoing detailed description of parts and assembly, but for completeness of disclosure such operation will be described briefly assuming the mixer to be attached to the faucet 11 and operatively' connected to the detergent and chlorine reservoirs 13-14 as shown in Fig. 1.

First, the valve pin 61 is adjusted to regulate the suction pressure in restricted portions 25-26 so that a predetermined quantity of liquid will flow through liquid induction passages 36-37 when opened.

Assume that in the initial stage the valve pins 36-37 are disposed in the opposite position from that shown in Fig. 3 so that the liquid induction passages 36-37 are closed as illustrated in Fig. 2. Then the faucet is opened and a stream of water passes through the primary passage 16. In some fields of use it is desired only to introduce a supply of detergent. In this case, valve pin 46 is slidably adjusted to open liquid induction passage 36. As previously described, the suction pressure of reduced portions 25 and 26 causes a quantity of detergent to flow through passage 36 and into the stream of water. In still other fields of use it is desired to introduce a supply of chlorine into the water stream simultaneously with the detergent. In this case, the valve pin 47 is slidably adjusted to open liquid induction passage 37 which permits a quantity of chlorine to flow into the water stream. It is apparent that detergent and chlorine can be introduced into the water stream in the primary passage either separately or simultaneously and that the quantity of such liquids can be readily determined by opening and closing the liquid induction passages 36-37 by the ready manipulation of valve pins 46-47.

Although the invention has been described by making detailed reference to a single preferred embodiment, such detail is to be understood in an instructive, rather than in any restrictive sense, many variants being possible within the scope of the claims hereunto appended.

I claim:

1. A fluid mixing device comprising a main casing including means for attachment to a source of fluid under pressure, said casing being provided with a primary passage therethrough having a restricted portion, a pair of valve bores extending transversely of said casing in parallel relation on opposite sides of said primary passage, a first liquid induction passage communicating with one of said bores and said restricted portion, a second liquid induction passage communicating with the other said bore and said restricted portion, said liquid induction passages having outlet openings into said primary passage arranged at the same level and at 180 degree relation, a valve pin slidably mounted in each said bore, the valve pins being arranged in parallel relation on opposite sides of said primary passage, said valve pins having a length exceeding the width of said casing, and having head portions at each end to determine the range of slidable movement of said pins, each pin being provided with a reduced portion alignable in one position with its respective liquid induction passage to permit liquid flow therethrough, said pins closing said liquid induction passages in another adjusted position, an air induction passage provided in said casing, and having an outlet opening to said primary passage at the same level as the outlet openings of said liquid induction passages yet arranged in degree relation thereto, and valve means in said air induction passage to control the magnitude of suction pressure created in the restricted portion by the flow of fluid therethrough.

2. A fluid mixing device comprising a main casing including means for attachment to a source of fluid under pressure, said casing being provided with a primary passage therethrough having a restricted portion, a pair of valve bores extending transversely of said casing on opposite sides of said primary passage, a first liquid induction passage communicating with one of said bores and having an outlet port at one side of said restricted portion, a second liquid induction passage communicating with the other said bore and having an outlet port at the opposite side of said restricted portion, and at the same level as the outlet port of said first liquid induction passage a valve pin slidably mounted in each of said bores, said valve pins having means to open and close said liquid induction passages upon slidable adjustment of said pins, and an air passage having an outlet port at the restricted portion between the outlet ports of said liquid induction passages.

3. A fluid mixing device comprising a main casing including means for attachment to a source of fluid under pressure, said casing being provided with a primary passage therethrough having a restricted portion, a pairof Y valve pins slidably mounted in said casing on opposite sides of said primary passage, a first liquid induction passage having an outlet port communicating with one side of said restricted portion, one of said valve pins having means for opening and closing said first induction passage, a second liquid induction passage having an outlet port communicating with the opposite side of said restricted portion, and at the same level as the outlet port of said first liquid induction passage the other valve pin having means for opening and closing said second induction passage, an air induction passage having an outlet port communicating with said restricted portion between the outlet ports of said liquid induction passages and at the same level, valve means in said air induction passage to control the suction created in said restricted portion by the passage of fluid therethrough.

4. A fluid mixing device comprising a main casing including means for attachment to a source of fluid under pressure, said casing being provided with a primary passage therethrough having a restricted portion, a pair of valve bores extending transversely of said casing on opposite sides of said primary passage, a first liquid induction passage communicating with one said bore and said restricted portion, a second liquid induction passage communicating with the other said bore and said re .stricted portion, a .valve pin slidably mounted in' each said valve borev and includingv means to open and close its respective liquid induction passage, said liquid induction passages having outlet openings into the primary passage arranged in 180 degree relation, an air induction passage in said casing communicating with said restricted portion atthe same level as said liquid induction passage outlet openings and arranged at degree relation thereto, and valve means in said air induction passage to control the suction created in said restricted portion by the passage of fluid therethrough.

5. A fluid mixing device comprising a main casing including means for attachment to a source of fluid under pressure, said casing being provided with a primary passage therethrough having a restricted portion, a first liquid induction passage having an outlet port communicating with one side of said restricted portion, valve means in said first liquid induction passage for opening and closing said passage, a second liquid induction passage having an outlet port communicating with the opposite side of said restricted portion and at the same level as the outlet port of said first liquid induction passage, a valve means in said second liquid induction passage for opening and closing said passage, and an air passage having an outlet port communicating with said restricted portion between the outlet ports of said liquid induction passages and at the same level.

References Cited in the file of this patent UNITED STATES PATENTS 110,850 Harrington Jan. 10, 1871 449,687 Maxim Apr. 7, 1891 700,373 Roake May 20, 1902 1,150,216 McNeil Aug. 17, 1915 1,162,982 Crocker Dec. 7, 1915 1,211,705 Hodgdon Jan. 9, 1917 1,519,312 Kelleher Dec. 16, 1924 1,748,004v Urquhart Feb. 18, 1930 2,210,846 Aghnides Aug. 6, 1940 2,230,201 Hermann Jan. 28, 1941 2,271,722 Thornton Feb. 3, 1942 2,571,870 Hayes Oct. 16, 1951 2,592,896 Hayes Apr. 15, 1952 2,597,775 Brown May 20, 1952 2,728,609 Pollock et a1. Dec. 27, 1955 2,738,962 Goodrie Mar. 20, 1956 FOREIGN PATENTS 7 1,021,762 France Dec. 3, 1952 

